# Memcached

- Einführung
- Installation/Konfiguration
  - Anforderungen
  - Installation
  - Laufzeit-Konfiguration
- Vordefinierte Konstanten
- Expiration Times
- Callbacks
  - Result callbacks
  - Read-through cache callbacks
- Sessions support
- Memcached — The Memcached class
  - Memcached::add — Add an item under a new key
  - Memcached::addByKey — Add an item under a new key on a specific server
  - Memcached::addServer — Add a server to the server pool
  - Memcached::addServers — Add multiple servers to the server pool
  - Memcached::append — Append data to an existing item
  - Memcached::appendByKey — Append data to an existing item on a specific server
  - Memcached::cas — Compare and swap an item
  - Memcached::casByKey — Compare and swap an item on a specific server
  - Memcached::__construct — Create a Memcached instance
  - Memcached::decrement — Decrement numeric item's value
  - Memcached::decrementByKey — Decrement numeric item's value, stored on a specific server
  - Memcached::delete — Delete an item
  - Memcached::deleteByKey — Delete an item from a specific server
  - Memcached::deleteMulti — Delete multiple items
  - Memcached::deleteMultiByKey — Delete multiple items from a specific server
  - Memcached::fetch — Fetch the next result
  - Memcached::fetchAll — Fetch all the remaining results
  - Memcached::flush — Invalidate all items in the cache
  - Memcached::get — Retrieve an item
  - Memcached::getAllKeys — Gets the keys stored on all the servers
  - Memcached::getByKey — Retrieve an item from a specific server
  - Memcached::getDelayed — Request multiple items
  - Memcached::getDelayedByKey — Request multiple items from a specific server
  - Memcached::getMulti — Retrieve multiple items
  - Memcached::getMultiByKey — Retrieve multiple items from a specific server
  - Memcached::getOption — Retrieve a Memcached option value
  - Memcached::getResultCode — Return the result code of the last operation
  - Memcached::getResultMessage — Return the message describing the result of the last operation
  - Memcached::getServerByKey — Map a key to a server
  - Memcached::getServerList — Get the list of the servers in the pool
  - Memcached::getStats — Get server pool statistics
  - Memcached::getVersion — Get server pool version info
  - Memcached::increment — Increment numeric item's value
  - Memcached::incrementByKey — Increment numeric item's value, stored on a specific server
  - Memcached::isPersistent — Check if a persitent connection to memcache is being used
  - Memcached::isPristine — Check if the instance was recently created
  - Memcached::prepend — Prepend data to an existing item
  - Memcached::prependByKey — Prepend data to an existing item on a specific server
  - Memcached::quit — Close any open connections
  - Memcached::replace — Replace the item under an existing key
  - Memcached::replaceByKey — Replace the item under an existing key on a specific server
  - Memcached::resetServerList — Clears all servers from the server list
  - Memcached::set — Store an item
  - Memcached::setByKey — Store an item on a specific server
  - Memcached::setEncodingKey — Set AES encryption key for data in Memcached
  - Memcached::setMulti — Store multiple items
  - Memcached::setMultiByKey — Store multiple items on a specific server
  - Memcached::setOption — Set a Memcached option
  - Memcached::setOptions — Set Memcached options
  - Memcached::setSaslAuthData — Set the credentials to use for authentication
  - Memcached::touch — Set a new expiration on an item
  - Memcached::touchByKey — Set a new expiration on an item on a specific server
- MemcachedException — The MemcachedException class

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